Title:
UNINTERRUPTIBLE POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/090174
Kind Code:
A1
Abstract:
When a first voltage detector (4a) develops a fault, a control circuit (7) of an uninterruptable power supply device controls an inverter (3) in synchronization with the output signal (VI2D) of a second voltage detector (4b), matches the phase of a two-phase AC voltage (VO1, VO2) outputted from the inverter (3) with the phase of a two-phase AC voltage (VI1, VI2) supplied from a commercial AC power supply (51), and subsequently switches on a semiconductor switch pair (S9, S10) and a bypass switch pair (S7, S8). Accordingly, even if the first voltage detector (4a) develops a fault, a two-phase AC voltage can be supplied to a load (53) without instantaneous interruption.
More Like This:
Inventors:
MASUNAGA HIROSHI (JP)
YAMANISHI AKIHIRO (JP)
YAMANISHI AKIHIRO (JP)
Application Number:
PCT/JP2015/083357
Publication Date:
June 01, 2017
Filing Date:
November 27, 2015
Export Citation:
Assignee:
TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP (JP)
International Classes:
H02J9/06; H02M5/45; H02M7/48
Foreign References:
| JPH06253549A | 1994-09-09 | |||
| JP2004135370A | 2004-04-30 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF:
Previous Patent: CONTROL DEVICE, CHARGING INFORMATION DISPLAY METHOD AND PROGRAM
Next Patent: VERIFICATION ASSISTANCE SYSTEM AND METHOD
Next Patent: VERIFICATION ASSISTANCE SYSTEM AND METHOD